{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1021B-15VXI","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1021B-15VXI","canonicalUrl":"https://icboms.com/infineon/CY7C1021B-15VXI","factsUrl":"https://icboms.com/api/mcp/products/CY7C1021B-15VXI","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C1021B-15VXI, 1Mbit (64K x 16) Asynchronous SRAM, 15 ns access time, Parallel interface, 4.5V~5.5V supply, -40°C~85°C, 44-BSOJ (0.400\", 10.16mm Width) package, Tray.","salesMarkdown":"## 15 ns asynchronous SRAM for 5V legacy systems This part is a staple for 5V DSPs, microcontrollers, and legacy logic systems that need fast, byte-wide or word-wide scratchpad memory without clock management overhead. ## 44-SOJ footprint and surface-mount assembly The J-lead form factor offers a compact footprint while retaining good board-level reliability for industrial environments. Cypress (now part of Infineon) has designated the CY7C1021B-15VXI as obsolete. For BOM lines that still require this exact order code, procurement must turn to independent distribution and the surplus market. ## Design-in considerations for the 5V bus The x16 organization is convenient for 16-bit data buses — no need for external byte-lane muxing. The industrial temperature range covers most factory-floor and outdoor telecom enclosures, but not extended automotive or downhole environments.","metaTitle":"CY7C1021B-15VXI Cypress 1Mbit Async SRAM, 15 ns, 44-SOJ","metaDescription":"CY7C1021B-15VXI Cypress 1Mbit (64K x 16) asynchronous SRAM with 15 ns access time, 4.5V-5.5V supply, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","Package":"Tray","Technology":"SRAM - Asynchronous","Access Time":"15 ns","Memory Size":"1Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"44-BSOJ (0.400\\\", 10.16mm Width)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"4.5V ~ 5.5V","Base Product Number":"CY7C1021","Memory Organization":"64K x 16","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"44-SOJ","Write Cycle Time - Word, Page":"15ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0fb2bf1fb1bf1eaa7b1a14798a1f21cb.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the equivalent of CY7C1021B-15VXI?","answer":"No direct pin-compatible replacement is listed in the official lifecycle record. Any substitution must be validated for footprint, timing, and supply voltage compatibility in the target design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1021B-15VXI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1021B-15VXI when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}